* {
    margin: 0;
    padding: 0;
    list-style: none;
    box-sizing: border-box;
}

.wrap {
    width: 500px;
    margin: 100px auto;
}

.progress {
    width: 300px;
    height: 20px;
    border-radius: 10px;
    background: #555;
    position: relative;
}

.left.active1 {
    height: 40px;
    position: absolute;
    top: -10px;
    width: 40px;
    border-radius: 50%;
    background: tomato;
}

.right.active1 {
    height: 40px;
    position: absolute;
    top: -10px;
    width: 40px;
    border-radius: 50%;
    background: tomato;
    right: 0;
}

.left.active2 {
    height: 40px;
    position: absolute;
    top: -10px;
    width: 4px;
    background: skyblue;
}

.right.active2 {
    height: 40px;
    position: absolute;
    top: -10px;
    width: 4px;
    background: skyblue;
    right: 0;
}

.content {
    width: 100%;
    height: 100%;
    background: red;
    border-radius: 10px;
    position: absolute;
}
